8:4+2.(X+1)-10:5+5=9
X+3.(X-1)-7=6
3+2-5+X=2+1-3
2.(3.X-15)-4.X+20=2
3.X-12:3+2+3.(X-1)=13
9-8:2+3.X-2.(X+1)=18:3-6:3+1
4.X-2=-10
X-2=-3-2.X-8
X=-2
X=3
X=0
X=6
X=4
X=-3
X=1